1 / 19

Interferometer with Dual Recycling Mode Cleaner: Installation Status Update

This update from the Harald Lück GEO Status meeting in September 2004 in Hannover/Ruthe highlights the installation status of an interferometer with dual recycling mode cleaner. Changes include the installation of suspended output optics, HPD in a separate vacuum vessel, and a new sensor for MI length control. The meeting discussed the installation of a 2f local oscillator and new gain distribution in MI length control. Further steps for the GEO600 project involve repairing leaks in the central building, setting up a new office container, and enhancing sensitivity towards S4. Construction work includes adding six desks and common area facilities in the new office container.

selenac
Download Presentation

Interferometer with Dual Recycling Mode Cleaner: Installation Status Update

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Harald Lück GEO Status (Update) ILIAS WG1 meeting, Sep. 2004, Hannover/Ruthe

  2. interferometer with dual recycling mode cleaner 12W laser output mode cleaner detector Installation Status attenuated to 2W MPR ~1% Transmission

  3. Sensitivity changes between WG1 meetings

  4. Changes since last meeting • installation of suspended output optics • HPD in separate vacuum vessel • new sensor (HPD) for MI length control • 2f local oscillator (optional) • new gain distribution in MI length control

  5. Output MC not installed (yet?) Output optics / vacuum tank high-power diode - TCOc

  6. central building / control room W/O output optics Stomp in Ctrl. room

  7. Noise Projections: the analytical way

  8. Changing MID loop electronics

  9. Changing SR loop – UG ~35Hz

  10. ‘2f LO’ for MID Demodulation

  11. Laser amplitude noise & stab. Red = Inner and outer loop running Blue = only inner loop running Green = both loops off

  12. Variation of SR Modulation Index

  13. Effect of changing the heater power

  14. ROC- Correction of MFe 71W Optimal Compensation Contrast enhanced

  15. Sensitivity for changing ROC of MFE

  16. GEO600 next steps • repairing leak in central building • Set up new office container • improve sensitivity towards S4 • increase injected power • increase power recycling factor • lock acquisition might cause problems • simulations and testing needed, maybe OMC required

  17. construction work

  18. Central Building new office container 6 desks, common area toillets

  19. GEO600 next steps • repairing leak in central building (almost done) • Set up new office container • improve sensitivity towards S4 • increase injected power • implement segmented heater • increase power recycling factor (300 -> 2000) • lock acquisition might cause problems • simulations and testing needed, maybe OMC required

More Related